Home / 21,285,514.53-29,374,038.45-12,118,157.28

Finding the Fourth Proportional to 21,285,514.53, 29,374,038.45 and 12,118,157.28

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Solution

The fourth proportional to 21,285,514.53, 29,374,038.45 and 12,118,157.28 is: 16,723,073.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,285,514.53 : 29,374,038.45 = 12,118,157.28 : x
  2. Step 2: Convert to fraction form
    21,285,514.53/29,374,038.45 = 12,118,157.28/x
  3. Step 3: Cross multiply
    21,285,514.53x = 29,374,038.45 × 12,118,157.28
  4. Step 4: Simplify right side
    21,285,514.53x = 355,959,217,885,867.38
  5. Step 5: Solve for x
    x = 355,959,217,885,867.38/21,285,514.53
  6. Step 6: Final answer
    x = 16,723,073.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.